The invention describes a universal structural element (1) for the purpose
of forming in particular, three-dimensional structures, which structural
element can be manufactured in a convenient manner efficiently,
cost-effectively from the most varied materials and can be recycled in an
environmentally-friendly manner, can be used and applied universally,
enables a monolithic type of construction using similar connectors (5)
for connecting similar structural elements together and with other
elements at low assembly cost and allows disassembly or reconstruction
work to be conducted in a straightforward and non-destructive manner,
meets high static requirements and can preferably be standardized in
modular dimensions. In accordance with the invention, a universal
structural element (1) in the form of a profile body, having preferably a
substantially square cross-section, comprises on all longitudinal sides
undercut grooves (2) that are connected on the end sides (3) by means of
intersecting undercut grooves (4) with preferably the same cross-section.